FUSE_SETXATTR — fuse_setxattr_in (8 bytes for v7.31) + name + NUL + value.
flags is the POSIX XATTR_CREATE / XATTR_REPLACE bitmask. The
extended setxattr_flags field added in v7.33 is not parsed —
callers wanting that behaviour must negotiate FUSE_SETXATTR_EXT,
which we don't yet advertise.
Summary
Types
@type t() :: %Wick.Protocol.Request.SetXattr{ flags: non_neg_integer(), name: binary(), size: non_neg_integer(), value: binary() }